Calixto's House of Curiosities

Calixto's House of Curiosities is an attraction found in Windhelm. It is a museum, run by Calixto, to show off items he (and his deceased sister) collected in their travels. He is not a trader, but for 2 Gold he will give you a tour highlighting a few items.

If you're not opposed to some pickpocketing/thieving, there are some good and interesting items to be had here. The easiest way to steal things is to initiate the tour, which will get Calixto walking around and allow you to go to different parts of the room undetected while he stops and talks about items.

One of the more interesting items to be found is his journal (called "Butcher Journal"), which is locked in a chest upstairs. You'll need to pickpocket him for the key to the chest and then get him started on the tour and wait for him to move to the other side of the room so he won't see you getting into the chest.